BAEL-3451: Included menu. Not complete
This commit is contained in:
Sorin Zamfir
parent
09a183cd7a
commit
362be8fc7a
|
|
@ -2,14 +2,12 @@
|
||||||
|
|
||||||
# Subsection 2.1
|
# Subsection 2.1
|
||||||
simple_function() {
|
simple_function() {
|
||||||
echo "First"
|
|
||||||
for ((i=0;i<5;++i)) do
|
for ((i=0;i<5;++i)) do
|
||||||
echo -n " "$i" ";
|
echo -n " "$i" ";
|
||||||
done
|
done
|
||||||
}
|
}
|
||||||
|
|
||||||
function simple_function {
|
function simple_function_no_parantheses {
|
||||||
echo "Second"
|
|
||||||
for ((i=0;i<5;++i)) do
|
for ((i=0;i<5;++i)) do
|
||||||
echo -n " "$i" ";
|
echo -n " "$i" ";
|
||||||
done
|
done
|
||||||
|
|
@ -35,18 +33,18 @@ function simple_inputs() {
|
||||||
}
|
}
|
||||||
|
|
||||||
# Subsection 2.3
|
# Subsection 2.3
|
||||||
sum=0
|
global_sum=0
|
||||||
function simple_outputs() {
|
function global_sum_outputs() {
|
||||||
sum=$(($1+$2))
|
global_sum=$(($1+$2))
|
||||||
}
|
}
|
||||||
|
|
||||||
function simple_outputs() {
|
function cs_sum_outputs() {
|
||||||
sum=$(($1+$2))
|
sum=$(($1+$2))
|
||||||
echo $sum
|
echo $sum
|
||||||
}
|
}
|
||||||
|
|
||||||
# Subsection 2.4
|
# Subsection 2.4
|
||||||
function ref_outputs() {
|
function arg_ref_sum_outputs() {
|
||||||
declare -n sum_ref=$3
|
declare -n sum_ref=$3
|
||||||
sum_ref=$(($1+$2))
|
sum_ref=$(($1+$2))
|
||||||
}
|
}
|
||||||
|
|
@ -54,27 +52,29 @@ function ref_outputs() {
|
||||||
# Subsection 3.1
|
# Subsection 3.1
|
||||||
variable="baeldung"
|
variable="baeldung"
|
||||||
function variable_scope2(){
|
function variable_scope2(){
|
||||||
echo "Variable inside function variable_scope2 : [$variable]"
|
echo "Variable inside function variable_scope2: [$variable]"
|
||||||
local variable="ipsum"
|
local variable="ipsum"
|
||||||
}
|
}
|
||||||
|
|
||||||
function variable_scope(){
|
function variable_scope(){
|
||||||
local variable="lorem"
|
local variable="lorem"
|
||||||
echo "Variable inside function variable_scope : [$variable]"
|
echo "Variable inside function variable_scope: [$variable]"
|
||||||
variable_scope2
|
variable_scope2
|
||||||
}
|
}
|
||||||
|
|
||||||
# Subsection 3.2
|
# Subsection 3.2
|
||||||
sum=0
|
subshell_sum=0
|
||||||
function simple_subshell()
|
function simple_subshell_sum()
|
||||||
(
|
(
|
||||||
sum=$(($1+$2))
|
subshell_sum=$(($1+$2))
|
||||||
|
echo "Value of sum in function with global variables: [$subshell_sum]"
|
||||||
)
|
)
|
||||||
|
|
||||||
function simple_subshell_ref()
|
function simple_subshell_ref_sum()
|
||||||
(
|
(
|
||||||
declare -n sum_ref=$3
|
declare -n sum_ref=$3
|
||||||
sum_ref=$(($1+$2))
|
sum_ref=$(($1+$2))
|
||||||
|
echo "Value of sum in function with ref arguments: [$sum_ref]"
|
||||||
)
|
)
|
||||||
|
|
||||||
# Subsection 3.3
|
# Subsection 3.3
|
||||||
|
|
@ -121,6 +121,86 @@ function fibonnaci_recursion() {
|
||||||
fi
|
fi
|
||||||
}
|
}
|
||||||
|
|
||||||
|
# main menu entry point
|
||||||
|
echo "****Functions samples menu*****"
|
||||||
|
PS3="Your choice (1,2,3 etc.):"
|
||||||
|
options=("function_definitions" "function_input_args" "function_outputs" \
|
||||||
|
"function_variables" "function_subshells" "function_redirections" \
|
||||||
|
"function_recursion" "quit")
|
||||||
|
select option in "${options[@]}"
|
||||||
|
do
|
||||||
|
case $option in
|
||||||
|
"function_definitions")
|
||||||
|
echo -e "\n"
|
||||||
|
echo "**Different ways to define a function**"
|
||||||
|
echo -e "No function keyword:"
|
||||||
|
simple_function
|
||||||
|
echo -e "\nNo function parantheses:"
|
||||||
|
simple_function_no_parantheses
|
||||||
|
echo -e "\nOmitting curly braces:"
|
||||||
|
simple_for_loop
|
||||||
|
echo -e "\n"
|
||||||
|
;;
|
||||||
|
"function_input_args")
|
||||||
|
echo -e "\n"
|
||||||
|
echo "**Passing inputs to a function**"
|
||||||
|
simple_inputs lorem ipsum
|
||||||
|
echo -e "\n"
|
||||||
|
;;
|
||||||
|
"function_outputs")
|
||||||
|
echo -e "\n"
|
||||||
|
echo "**Getting outputs from a function**"
|
||||||
|
global_sum_outputs 1 2
|
||||||
|
echo -e "1+2 using global variables: [$global_sum]"
|
||||||
|
cs_sum=$(cs_sum_outputs 1 2)
|
||||||
|
echo -e "1+2 using command substitution: [$cs_sum]"
|
||||||
|
arg_ref_sum_outputs 1 2 arg_ref_sum
|
||||||
|
echo -e "1+2 using argument references: [$arg_ref_sum]"
|
||||||
|
echo -e "\n"
|
||||||
|
;;
|
||||||
|
"function_variables")
|
||||||
|
echo -e "\n"
|
||||||
|
echo "**Overriding variable scopes**"
|
||||||
|
echo "Global value of variable: [$variable]"
|
||||||
|
variable_scope
|
||||||
|
echo -e "\n"
|
||||||
|
;;
|
||||||
|
"function_subshells")
|
||||||
|
echo -e "\n"
|
||||||
|
echo "**Running function in subshell**"
|
||||||
|
echo "Global value of sum: [$subshell_sum]"
|
||||||
|
simple_subshell_sum 1 2
|
||||||
|
echo "Value of sum after subshell function with \
|
||||||
|
global variables: [$subshell_sum]"
|
||||||
|
subshell_sum_arg_ref=0
|
||||||
|
simple_subshell_ref_sum 1 2 subshell_sum_arg_ref
|
||||||
|
echo "Value of sum after subshell function with \
|
||||||
|
ref arguments: [$subshell_sum_arg_ref]"
|
||||||
|
echo -e "\n"
|
||||||
|
;;
|
||||||
|
"function_redirections")
|
||||||
|
echo -e "\n"
|
||||||
|
echo "**Function redirections**"
|
||||||
|
echo -e "File input redirection:"
|
||||||
|
redirection_in
|
||||||
|
echo -e "Command input redirection:"
|
||||||
|
redirection_in_ps
|
||||||
|
;;
|
||||||
|
# "timeout_input_read")
|
||||||
|
# echo "Enter something in 5 seconds or less"
|
||||||
|
# timeout_input_read
|
||||||
|
# ;;
|
||||||
|
# "exactly_n_read")
|
||||||
|
# echo "Enter at least 11 characters or wait 5 seconds"
|
||||||
|
# exactly_n_read
|
||||||
|
# ;;
|
||||||
|
"quit")
|
||||||
|
break
|
||||||
|
;;
|
||||||
|
*) echo "Invalid option";;
|
||||||
|
esac
|
||||||
|
done
|
||||||
|
|
||||||
#simple_function
|
#simple_function
|
||||||
# simple_inputs one 'two three'
|
# simple_inputs one 'two three'
|
||||||
# sum=$(simple_outputs 1 2)
|
# sum=$(simple_outputs 1 2)
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue